Adjusting mechanism for door-bolts.



E. L. THIGH.

ADJUSTING MECHANISM FOR DOOR BOLTS.

APPLICATION FILED FEB-8, 1912.

1,033,057. Patented July 16, 1912.

ERNEST L. TEICI-I, OF NEW BRITAIN, CONNECTICUT,

HARDWARE CORPORATION, CONNECTICUT.

ASSIGNOR TO THE AMERICAN OF NEW BRITAIN, CONNECTICUT, A CORPORATION OFADJUSTING MECHANISM FOR DOOR-BOLTS.

' like.

The object of the present invention is to provide an effective adjustingmeans where by the length of the bolt element may be changed.

The invention will be found to be of particular utility when employed inconnection with so-called panic door bolts wherein long bolt rods extendupwardly and down wardly from the operating point to the bolt headslocated ordinarily at the top and bottom of the door. It is inconnection with such a device that I have elected-to show my invention,although in a particular sense the invention is not limited thereto.

In the drawings, Figure 1 is a front elevation of a door equipped withmy improvement. Fig. 2 is a relatively enlarged view, partly in section,of details of construction. Fig. 3 is a perspective view of threecompanion elements. Fig. 4 is a perspective view of another element.

1 represents a door.

2 represents the case or cover of the bolt proper. Since the particularform of the bolt proper is immaterial, the same is not shown.

3 is a shaft constituting the tail of the bolt, the same being connectedthereto in any suitable way. In this particular instance the operationof the bolt is effected by rotating the shaft 3.

4 represents a bracket which is located about midway on the door tosupport the operating member.

5 represents the operating member, the same being in the form of a leverprojecting laterally from a hub 6. The hub 6 has a squared open end 7designed to receive the squared lower end 3 of the shaft 3 so that whenthe hub is turned, the shaft 3 will be turned. The important thing toprovide is a simple and effective means of ready adjustment whereby therod 3 may be adjusted as to its end connections to allow for differ-Specification of Letters Patent.

Application filed February 8, 1912.

Patented July 16, 1912. Serial No. 676,291.

ences in distance from the bracket at or hub 6 to the bolt or bolt case2. In many instances this distance, though originally de signed to be acertain definite distance, may vary. This variation seldom exceeds a substantial fraction of an inch, and in the present construction I haveprovided adjusting means which enables this variation to be easily takencare of. The hub (3, carried by the bracket 4, ordinarily will standbetween two shoulders 8-S, which shoulders are pro vided with a passagein line with the opening of the hub and suliicient to permit the squaredend 3 of the rod to pass freely .therethrough to enter the hub. Indeed,this opening should be made sufliciently large to permit of theintroduction of a bearing bushing 9, which likewise has a squaredpassage 9 for the squared end 3 of the rod. Standing above the bushingis an adjusting sleeve 10 which is provided with an internal thread 1Oat its lower end which makes a threaded engagement with the lower end ofthe shaft 3, a portion of said shaft and the corners thereof beingproperlythreaded to coact with the threaded part of the sleeve 10. Theunthreaded part of the sleeve 10 projects upwardly and covers at alltimes the threaded part of the shaft 3. Suitable coupling devices arearranged bet-ween the bushing 9 and the sleeve 10 whereby, when theparts are in their assembled position, said sleeve 10 and bushing 9cannot turn independently, the function of this coupling being mainly toprevent the rotary displacement of the sleeve 10 upon the rod 3 afterproper adjustment has been effected. In this particular instance, theclutch may comprise one or two pins l111 carried, for example, by thebushing 9 and arranged to enter perforations 12l2 in the lower end ofthe sleeve 10.

In operation, the distance between the bracket 4 or the hub 6 and thebolt head 2 is accurately determined. The sleeve 10 is then adjustedproperly upon the rod 3 so that when all the parts are assembled, theupper end of the rod 3 will properly coact with the bolt 2, and likewisewith the hub 6. The parts are then put together or assembled, whichassembling involves the passing of the squared end of the rod 3 downthrough the bushing 9 and into the squared opening in the end of the hub6. The clutch parts are so positioned that during this act ofassembling, the clutch members 11 will enter the receiving pockets 12 onthe sleeve 10. When thus assembled, it will be seen that the rocking ofthe hub 6 will impart a rocking movement to the shaft 3; and it willalso be seen that the sleeve 10 cannot be turned to vary the adjustmentsince it is locked with the bushing 9 and since the bushing 9 in turncannot be rotated on the shaft 3 by reason of the fact that said bushingis held against rotation on the squared part 3 of said shaft. By thisvery simple means, quite a wide range of adjust-.

ment is possible. It is obvious that a corresponding adjustment may beprovided for the bolt shaft or tail 14, but this need not be describedsince it would be merely a duplicate of the parts already fully pointedout.

\Vhile I have spoken of the lower end of the shaft 3 as being squared,obviously the particular cross sectional shape is immaterial so long asit is of a shape to prevent turning independently of the hub 6 andsleeve 10 when the parts are assembled. In the event of a modifiedshape, of course the passage through the bushing 9 and hub 7 would becorrespondingly modified So also, while I have shown the clutch ascomposed of simple pins 11 designed to enter receiving pockets 12 in theadjusting sleeve 10, the particular form of the clutch may be modifiedwithin a considerable range.

What I claim is:

1. In an adjusting mechanism of the character described, a rod, meansfor rocking said rod on its own axis and adjustable means between saidrocking means and said rod comprising a bushing slidable on said rod,but not rotatable thereon, a sleeve threaded upon said rod and adjacentto said bushing and arranged to be adjusted longitudinally on said rodby rotation, and a clutch for detachably connecting said bush ing andsaid sleeve to hold said parts against independent rotation.

2. In an adjusting mechanism of the character described, a rod, anoperating device slidable but not rotatable upon said rod, a bushingalso slidable but not rotatable upon said rod and a sleeve threaded uponsaid rod and adjustable longitudinally thereon by rotation, and a clutchbetween said sleeve and said bushing.

3. In an adjusting device of the character described, a rod, anoperating device slidable but not rotatable thereon, a bracket forsupporting said opera-ting device, a bushing rotatably mounted in saidbracket and slid ably mounted upon said rod but not rotatable relativelythereto, a sleeve adjustable longitudinally on said rod and a screwthread connection between said sleeve and rod, and a clutch fordetachably connecting said rotatable sleeve with said non-rotatablebushing when said parts are adjusted to the desired position.

ERNEST L. TEICH.

Witnesses O. A. PARKER, PHILIP GORBIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

